416 research outputs found

    Dihedral Group Frames with the Haar Property

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    We consider a unitary representation of the Dihedral group D2n=ZnZ2D_{2n}% =\mathbb{Z}_{n}\rtimes\mathbb{Z}_{2} obtained by inducing the trivial character from the co-normal subgroup {0}Z2.\left\{0\right\}\rtimes\mathbb{Z}_{2}. This representation is naturally realized as acting on the vector space Cn.\mathbb{C}^{n}. We prove that the orbit of almost every vector in Cn\mathbb{C}^{n} with respect to the Lebesgue measure has the Haar property (every subset of cardinality nn of the orbit is a basis for Cn\mathbb{C}^{n}) if nn is an odd integer. Moreover, we provide explicit sufficient conditions for vectors in Cn\mathbb{C}^{n} whose orbits have the Haar property. Finally, we derive that the orbit of almost every vector in Cn\mathbb{C}^{n} under the action of the representation has the Haar property if and only if nn is odd. This completely settles a problem which was only partially answered in \cite{Oussa}

    Social Partnership and its Continuities

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    Social partnership has long been pronounced ‘dead’ and buried, lamented by few. But thirty years on from the watershed Programme for National Recovery of 1987, the underlying influence of the 22-year construct is stronger than it might seem. How pay formation in the private and public sectors works today; how management-union disputes are resolved; how employers and trade unions engage; and how the social partners manage key industrial relations issues, all suggest important continuities with the partnership era

    Symmetric Full Spark Frames

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    A full-spark frame of an n-dimensional vector space is a finite collection of m vectors (m ≥ n) with the following property: every subset of cardinality n of the given collection is a basis for the vector space. In this thesis, we realize the symmetric group Sn as a matrix group of invertible matrices with n2 entries for n \u3e 2: This representation induces a natural linear action on the vector space ℂn and we prove that Sn admits an orbit which is a full-spark frame if and only if n ≤ 3

    Some Reflections on the Question of ‘Finality’ in Irish Industrial Relations Disputes

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    Trade unions in the private sector and the commercial semi-states have rejected voluntarist Labour Court recommendations in the industrial relations arena in a significant number of high-profile cases in recent times. Conversely, in parts of the public sector, there has been a move towards the adoption of binding dispute resolution systems. Brian Sheehan suggests that respect for the state’s dispute resolution agencies and need for expertise and experience in dispute management is as great as ever

    Motivation to Move with Exergaming in Online Physical Education

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    Motivation to move is critical in online physical education (OLPE). This study looked at the motivational aspect of remote exergaming versus another student versus proximally against a console generated non-player character (NPC). Research shows that students in grades 4-12 are motivated to play exergames because they are native gamers. The entertainment value of the exergame garners more effort from the students than they realize they are expending. This research showed that exergames are motivating for students (N=124) aged 11-18 in grades 6-12. The subjects reported high motivation to participate while playing both a computer-generated NPC and a remote human opponent over the internet. Scores for motivation were highest when subjects played another student over the internet but were also high for proximal NPC play. This research positions exergaming as a potential piece of OLPE curriculum that can help students access the emotional aspect of physical education curriculum

    Understanding Future Development in the White Street and Springfield Avenue Corridors: Trends, Conditions, and Guidelines

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    The purpose of this project is to determine ways in which to encourage a higher density of residents to live in the White Street and Springfield Avenue corridors to further the use of mass transit and other alternate transportation modes such as walking and bicycling.Ope

    The chromosomal association/dissociation of the chromatin insulator protein Cp190 of Drosophila melanogaster is mediated by the BTB/POZ domain and two acidic regions

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    <p>Abstract</p> <p>Background</p> <p>Chromatin insulators or boundary elements are a class of functional elements in the eukaryotic genome. They regulate gene transcription by interfering with promoter-enhancer communication. The Cp190 protein of <it>Drosophila </it><it>melanogaster </it>is essential to the function of at least three-types of chromatin insulator complexes organized by Su(Hw), CTCF and BEAF32.</p> <p>Results</p> <p>We mapped functional regions of Cp190 in vivo and identified three domains that are essential for the insulator function and for the viability of flies: the BTB/POZ domain, an aspartic acid-rich (D-rich) region and a C-terminal glutamic acid-rich (E-rich) region. Other domains including the centrosomal targeting domain and the zinc fingers are dispensable. The N-terminal CP190BTB-D fragment containing the BTB/POZ domain and the D-rich region is sufficient to mediate association with all three types of insulator complexes. The fragment however is not sufficient for insulator activity or viability. The Cp190 and CP190BTB-D are regulated differently in cells treated with heat-shock. The Cp190 dissociated from chromosomes during heat-shock, indicating that dissociation of Cp190 with chromosomes can be regulated. In contrast, the CP190BTB-D fragment didn't dissociate from chromosomes in the same heat-shocked condition, suggesting that the deleted C-terminal regions have a role in regulating the dissociation of Cp190 with chromosomes.</p> <p>Conclusions</p> <p>The N-terminal fragment of Cp190 containing the BTB/POZ domain and the D-rich region mediates association of Cp190 with all three types of insulator complexes and that the E-rich region of Cp190 is required for dissociation of Cp190 from chromosomes during heat-shock. The heat-shock-induced dissociation is strong evidence indicating that dissociation of the essential insulator protein Cp190 from chromosomes is regulated. Our results provide a mechanism through which activities of an insulator can be modulated by internal and external cues.</p

    Junior Recital: Michael DeSousa, trombone

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    This recital is presented in partial fulfillment of requirements for the degree Bachelor of Music in Performance. Mr. DeSousa studies trombone with Tom Gibson and Wes Funderburk.https://digitalcommons.kennesaw.edu/musicprograms/1250/thumbnail.jp

    The Brink of the Abyss: From Transcatheter Aortic Valve Implantation, to Impella, to Left Ventricular Assist Device Destination Therapy

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    Acute valvular emergencies are common causes of cardiogenic shock. Patients with critical aortic pathologies causing shock frequently undergo percutaneous interventions for valve replacement. However, in cases of persistent cardiogenic shock after valve replacement, there are limited options for further mechanical support. In this case study, we report a patient with a prior history of aortic valve replacement who presented in cardiogenic shock. After a transcatheter aortic valve-in-valve replacement, he remained in persistent shock with worsening clinical parameters requiring escalating inotropic and vasopressor support. With input from a multidisciplinary care team, an Impella 5.5 (Abiomed, Inc.) was placed through the valve for mechanical circulatory support, ultimately serving as a bridge to a durable left ventricular assist device as destination therapy. This technically challenging approach was successful, and the patient was discharged to acute rehabilitation with improved symptoms

    Predicting consistent foraging ecologies of migrating waterbirds: Using stable isotope and parasite measurements as indicators of landscape use

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    The emergence of novel human pathogens is frequently linked with zoonotic events and human-wildlife interactions that promote disease transmission. Consequently, surveillance of wildlife populations for candidate diseases that could spread to humans is beneficial, but requires widespread collections of numerous samples. A legitimate means to acquire large sample sizes of waterfowl is through cooperation between researchers and hunters, who also work in concert with natural resource managers, landowners, and agricultural entities -e.g., aquaculture facilities. In addition to understanding the occurrence and spread of parasites and pathogens by birds, these samples can be used to answer questions about the ecology of various waterbird species. Body mass and morphometric data on hunter-donated specimen are useful for understanding bird condition and other dynamics of birds; however, when breast meat is removed prior to the acquisition of specimen weight, samples might not be as desirable. Here, we evaluate the utility of data obtained from a bird species that might be targeted by hunters and subsequently used to learn about their disease dynamics. Lesser Scaup (Aythya affinis) collected at aquaculture facilities were assessed for their stable isotope concentrations and parasites communities to learn about the birds’ foraging ecology. Discriminant analyses designed to classify birds by the aquaculture pond type from which they were collected included isotope data, Principal Components derived from parasite community data of 7 types, and birds’ body mass. We compared these to Double-crested Cormorants (Nannopterum auritum) feeding on catfish and found the two waterbird species exhibited different infracommunities of parasites Furthermore, some scaup demonstrated fish aquaculture pond type fidelity. Bird body mass was an important metric to include in analytical models when all parasite datatypes were not available. However, the combination of stable isotope concentrations and parasite infracommunity data (that includes prevalence, abundance, volume, and energy use) in models resulted in host ecology differentiation equal or better than models where bird body mass was included. Hunter-derived samples should be encouraged as a means for sample acquisition and be considered as an approach for aquaculture-wildlife conflict management as the information that can be obtained through these samples is multifaceted
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